Sawdust-catching attachment for circular saws.



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Y LYLIOTIOI HLBD API-.11, 01. Y 922,840. r mendmayz, 1909.

Alianza (not shown), the lower portion of the vsaw ex- DANIEL J.BEMILLER, Ol." BUTLER, OHIO.

To atl whom it may com-em:

Beit known that I, DANiEL J. Brummen, a citizen of the United States,residing at Butler, in the county of Richland, State of Oliio, haveinvented certain new and useful Improvements in Sawd ust-CatchingAttachments for Circular Saws; and i do hereby deelare the following tobe a. lull, clear, and exact description of the invention, such as willenable others skilled in the art to which it appertains to make and usethe same.

The present invention relates to improvements in sawdust catchingattachments for circular saws, and it aims to provide a device of thatnatni'e consisting of a receptacle having a discharge spout projectingfrom its bot tom wall and connected with an exhaust pipe, which is inturn connected with a suction fan, the end walls of the receptacletapering toward the discharge spout to direct the sawdust thereinto.

Vith the above and other ends in view, the invention consists in theconstruction, combination, and arrangement of parts, all as hereinaftermore fully described, speciieally claimed, and illustrated in theaecompanying drawings, in which like parts are designated bycorresponding reference numerals in both views.

Ol" the said drawings-Figure 1 is a l'ront elevation of tlie'coni pletesawdust removing,r apparatus. Fig. 2 is a .transverse vertical sectionon the line 2-2 of Fig. l..

Referring more particularly to the drawings, the numeral 5 designates acircular saw of conventional type, mounted upon its shaft G, which isdiiven from any source of power tending into the sawdust-catchingreceptacle, generally designated 7. This receptacle coniprises a pair ofsemi-circular wooden sidepieces S, which are arranged in spaced relationto each other, and are connected at their cuived edges by a metal strip9. Through the strip 9 intermediate its ends is formed a discharweopening, which communicates with one en of a discharge spout 11, whichextends tangentially from the receptacle, as shown, the up er side edges10 of the s out being extende directly across the outer aces of Vhesides 8, and secured thereto, as shown n Specification of Letterslatent. Application led April 11, 1907. Serial No. 367,618.

in Figs. 1 and 2. To the opposite Vend of curved to form a continuationof the curved rear riin and the u iper edge being substantially tangentto t ic path ol' the saw teeth whereby suction is obtained entirelybelow the path of the saw teeth and the lull opening to the suction pipeis brought closely adjacent to the deepest part of said receptacle.

Patented May 25, 1909.

the discharge spout is connected one end of an exhaust pipe 12, whoseopposite end is fitted in the inlet opening 13 of an exhaust 55 fan 14.Y

'hile the sideiieces 8 of the receptacle 1 have been above( escribed asapproximately semi-circular, it will be observed from Fig. 1 that theright-hand curved edge of the side shown therein forms an arc of acircle, whose diameter is slightly greater than that of the left-handare, the connecting strip 9 being correspondingly bowed. Owing to thisconstruction and to the fact that the under face. of the spout 11 formsa continuation of the, right-hand are, it will be apparent that thesawdust thrown against the. strip t) by the -,saw will be directed intot-lie discharge. spout. Itwill be likewise obvious that by reason ofsuoli construction, it is correct to say that the receptacle 1s providedwith end walls which converge toward the discharge openmff when power isapplied to the drive-shaft of the fan and the saw is ruiming, allsawdust will be d rawn through the discharge opening and spout into theexhaust pipe and through the latter into the f an, whence it isdischarged through the outlet pipe 15 thereof.

The; sides of the receptacle are preferably formed of wood to preventany injury to the saw teeth from contact therewith, in the. event of thesaw becomingloosened and wabbling on its shaft.

Further description of the invention and its operation is deemedunnecessary in view of the foregoing.

W'hat is claimed, is-

In a device of the kind described, the com bination with a rotary saw;of a sawdust catching receptacle into which the lower portion of the sawextends, said receptacle coinprising a pair of spaced sides with thefront portion concentric with the saw and the rear portion formingsubstantially au iuvolute curve, a rim extending between said sides andcach of the curved portions, said rims terminating with said curvedportions at the 100 the rear bottom portion of the spout beine` D. l n

lt will be apparent from the foregoing that ln testimony whereof, Iall'ix my signature,

